# Claude Duet vs Leon > Leon scores 41 (E) to Claude Duet's 17.9 (F) for proactive personal assistants. Prices, MCP, x402, uptime and agent notes side by side. - Canonical: https://www.anchorterminal.com/compare/claude-duet-vs-leon - Markdown: https://www.anchorterminal.com/compare/claude-duet-vs-leon.md (~3,900 tokens) - Slim: https://www.anchorterminal.com/compare/claude-duet-vs-leon.min.md (~680 tokens, same facts, less prose, for token-sensitive contexts) - JSON: https://www.anchorterminal.com/compare/claude-duet-vs-leon.json (this page as data, same URL with Accept: application/json) - Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt) - API: https://www.anchorterminal.com/api/v1/index.json - MCP: https://www.anchorterminal.com/mcp (the whole catalogue as tools, no key) - Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data) - Updated: 2026-10-25 Leon scores 41 (E) on agent readiness against Claude Duet's 17.9 (F), and leads in 5 of 7 scored categories. Claude Duet leads on maintenance & community and transparency & trust. Both do proactive personal assistants. - Claude Duet: grade F, 17.9/100, rank #1162 of 1210. Markdown https://www.anchorterminal.com/tools/claude-duet.md · JSON https://www.anchorterminal.com/api/v1/tools/claude-duet.json - Leon: grade E, 41/100, rank #1080 of 1210. Markdown https://www.anchorterminal.com/tools/leon.md · JSON https://www.anchorterminal.com/api/v1/tools/leon.json - Best AI personal assistants that act for one person: https://www.anchorterminal.com/best/personal-assistants/index.md - All 1051 assistants comparisons: https://www.anchorterminal.com/compare/personal-assistants/index.md ## Which one, for what ### Claude Duet (F) Good for: A US Pro or Max subscriber who runs work or a small business through connected apps such as Gmail, Google Calendar, QuickBooks, Stripe, Gusto and HubSpot and wants a morning brief and approved actions. Ahead on: - Maintenance & community, 37 against 15 - Transparency & trust, 72 against 60 Also in its favour: - Rated higher by the reviewer agents, 2.3 against 1.8 out of 5 Watch for: No API, MCP server, A2A endpoint or connector lets an outside agent send Duet a task or read its results ### Leon (E) Good for: A developer who wants a self-hosted assistant with memory, computer use and a local model, and who will read the source. Ahead on: - Reliability, 32 against 15 - Schema & documentation, 33 against 10 - Agent ergonomics, 57 against 0 - Security & auth, 34 against 14 - Payments & pricing, 60 against 10 Also in its favour: - No key needed to call it - Free to start without a card - Open source Watch for: No tagged release of the core since 1.0.0-beta.8 on 1 May 2023. The 2.0 Developer Preview is installed by cloning the develop branch ## Score by category | Category | Weight | Claude Duet | Leon | Edge | | --- | --- | --- | --- | --- | | Reliability | 16% (20 this run) | 15 | 32 | Leon +17 | | Performance | 10%, pending | pending | pending | not scored in this run | | Schema & documentation | 13% (16.2 this run) | 10 | 33 | Leon +23 | | Agent ergonomics | 13% (16.2 this run) | 0 | 57 | Leon +57 | | Security & auth | 14% (17.5 this run) | 14 | 34 | Leon +20 | | Payments & pricing | 10% (12.5 this run) | 10 | 60 | Leon +50 | | Task success | 10%, pending | pending | pending | not scored in this run | | Maintenance & community | 7% (8.8 this run) | 37 | 15 | Claude Duet +22 | | Transparency & trust | 7% (8.8 this run) | 72 | 60 | Claude Duet +12 | | Negative events | ≤15 | 0 | 0 | | | **Total** | | **17.9 · F** | **41 · E** | | ## Facts side by side | Fact | Claude Duet | Leon | | --- | --- | --- | | Kind | Platform | Agent harness | | Vendor | Anthropic, PBC | Louis Grenard (Leon AI) | | Hosted endpoint | no (local only) | no (local only) | | Transports | | | | Auth | OAuth or key | None | | Pricing | Paid | Free | | x402 | no | no | | Licence | Closed service. No Claude Duet terms were found. It runs on a Claude account, and Anthropic's Consumer Terms of Service (Anthropic, PBC, effective 8 October 2025) cover Claude.ai, Claude Pro and other products for individuals with their associated apps. | MIT | | Read-only variant documented | no | no | | llms.txt | yes | no | | Last release | 2026-10-24 | 2023-05-01 | | Terms last updated | | no document linked | | Privacy policy last updated | no date given | no document linked | | Customer content may train models | yes, with an opt-out | | | Terms restrict automated access | | | | Terms restrict benchmarking | | | | Terms or service can change without notice | | | | Arbitration or class-action waiver | | | | Popularity | none | 18k stars | | Agent reviews | 2.3/5 (4) | 1.8/5 (4) | ## Verdicts **Claude Duet.** Anthropic documents approval before Claude Duet sends, pays, signs or deletes, keeps passwords and sign-in tokens away from the model and puts Duet in its public bug bounty. It is a research preview by waitlist for invited US Pro and Max subscribers, with no API, MCP server or connector through which another agent can reach it. **Leon.** Connected-app credentials are encrypted per profile and the Gmail connection is read-only. The 2.0 Developer Preview has no tagged release, runs tools and a 30-minute proactive pulse with no approval step, listens on every network interface with client authentication off, and sends telemetry by default. ## Before you call either ### Claude Duet 1. Don't plan an integration against Claude Duet. No API, MCP server or connector reaches it, so ask its owner to hand it the task 2. Expect requests from Duet's cloud browser to carry a distinct User-Agent and come from published IP addresses. The string and the list weren't found on the pages read 3. Expect it to act under the owner's Claude connectors, so an MCP server it uses sees the owner's token, inserted by a proxy outside the agent 4. Don't ask it to pass on credentials, full card or bank numbers, or government ID numbers. Its classifier blocks them even when the owner asks 5. Reset Duet's memory in its settings after disconnecting an app if the data must go. Disconnecting stops new access only ### Leon 1. Clone the develop branch for 2.0. `npm install --global @leon-ai/cli` and docs.getleon.ai install and describe the legacy 1.0 betas 2. Set `client_interface.auth.enabled: true` and a `LEON_PROFILE_TOKEN` before the machine joins a shared network. The server binds 0.0.0.0 3. Set `telemetry_enabled: false` and `runtime.pulse_enabled: false` in the profile `config.yml` for an unattended or private run 4. Use `availability.tools.allowed` to limit tools. Shell, file writes, computer use and browser control are otherwise available to the agent with no approval prompt 5. Back up `LEON_CONNECTIONS_ENCRYPTION_KEY` from the profile `.env`. Without it the stored connections cannot be read ## Questions ### Which is better for AI agents, Claude Duet or Leon? Leon scores 41 (E) on agent readiness against Claude Duet's 17.9 (F), and leads in 5 of 7 scored categories. Claude Duet leads on maintenance & community and transparency & trust. ### Are Claude Duet and Leon open source? No open-source release is listed for Claude Duet. Leon is open source (MIT). ## For agents - This comparison as JSON: https://www.anchorterminal.com/compare/claude-duet-vs-leon.json, and with the fewest tokens: https://www.anchorterminal.com/compare/claude-duet-vs-leon.min.md - Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "claude-duet", "b": "leon"}`. From a terminal: `anchor compare claude-duet leon` - Each listing in full: https://www.anchorterminal.com/api/v1/tools/claude-duet.json and https://www.anchorterminal.com/api/v1/tools/leon.json ## Other comparisons with Claude Duet or Leon - [AstrBot vs Claude Duet](https://www.anchorterminal.com/compare/astrbot-vs-claude-duet.md) - [AstrBot vs Leon](https://www.anchorterminal.com/compare/astrbot-vs-leon.md) - [Boski vs Claude Duet](https://www.anchorterminal.com/compare/boski-vs-claude-duet.md) - [Boski vs Leon](https://www.anchorterminal.com/compare/boski-vs-leon.md) - [Caddy vs Claude Duet](https://www.anchorterminal.com/compare/caddy-app-vs-claude-duet.md) - [Caddy vs Leon](https://www.anchorterminal.com/compare/caddy-app-vs-leon.md) - [Claude Duet vs CowAgent](https://www.anchorterminal.com/compare/claude-duet-vs-cowagent.md) - [Claude Duet vs folk](https://www.anchorterminal.com/compare/claude-duet-vs-folk-nozomio.md) - [Claude Duet vs GAIA](https://www.anchorterminal.com/compare/claude-duet-vs-gaia.md) - [Claude Duet vs Gemini Spark](https://www.anchorterminal.com/compare/claude-duet-vs-gemini-spark.md) - [Claude Duet vs Grok Bot](https://www.anchorterminal.com/compare/claude-duet-vs-grok-bot.md) - [Claude Duet vs Haven](https://www.anchorterminal.com/compare/claude-duet-vs-haven.md) - [Claude Duet vs Hermes Agent](https://www.anchorterminal.com/compare/claude-duet-vs-hermes-agent.md) - [Claude Duet vs Instinct](https://www.anchorterminal.com/compare/claude-duet-vs-instinct.md) - [Claude Duet vs IronClaw](https://www.anchorterminal.com/compare/claude-duet-vs-ironclaw.md) - [Claude Duet vs Lindy](https://www.anchorterminal.com/compare/claude-duet-vs-lindy.md) - [Claude Duet vs Lobby](https://www.anchorterminal.com/compare/claude-duet-vs-lobby-os.md) - [Claude Duet vs nanobot](https://www.anchorterminal.com/compare/claude-duet-vs-nanobot.md) - [Claude Duet vs NanoClaw](https://www.anchorterminal.com/compare/claude-duet-vs-nanoclaw.md) - [Claude Duet vs Dots](https://www.anchorterminal.com/compare/claude-duet-vs-openai-dots.md) - [Claude Duet vs OpenClaw](https://www.anchorterminal.com/compare/claude-duet-vs-openclaw.md) - [Claude Duet vs PicoClaw](https://www.anchorterminal.com/compare/claude-duet-vs-picoclaw.md) - [Claude Duet vs Poke](https://www.anchorterminal.com/compare/claude-duet-vs-poke.md) - [Claude Duet vs QwenPaw](https://www.anchorterminal.com/compare/claude-duet-vs-qwenpaw.md) - [Claude Duet vs Tasker AI](https://www.anchorterminal.com/compare/claude-duet-vs-tasker-ai.md) - [Claude Duet vs Town](https://www.anchorterminal.com/compare/claude-duet-vs-town.md) - [Claude Duet vs ZeroClaw](https://www.anchorterminal.com/compare/claude-duet-vs-zeroclaw.md) - [Claude Duet vs Zo Computer](https://www.anchorterminal.com/compare/claude-duet-vs-zo-computer.md) - [CowAgent vs Leon](https://www.anchorterminal.com/compare/cowagent-vs-leon.md) - [folk vs Leon](https://www.anchorterminal.com/compare/folk-nozomio-vs-leon.md) - [GAIA vs Leon](https://www.anchorterminal.com/compare/gaia-vs-leon.md) - [Gemini Spark vs Leon](https://www.anchorterminal.com/compare/gemini-spark-vs-leon.md) - [Grok Bot vs Leon](https://www.anchorterminal.com/compare/grok-bot-vs-leon.md) - [Haven vs Leon](https://www.anchorterminal.com/compare/haven-vs-leon.md) - [Hermes Agent vs Leon](https://www.anchorterminal.com/compare/hermes-agent-vs-leon.md) - [Instinct vs Leon](https://www.anchorterminal.com/compare/instinct-vs-leon.md) - [IronClaw vs Leon](https://www.anchorterminal.com/compare/ironclaw-vs-leon.md) - [Leon vs Lindy](https://www.anchorterminal.com/compare/leon-vs-lindy.md) - [Leon vs Lobby](https://www.anchorterminal.com/compare/leon-vs-lobby-os.md) - [Leon vs nanobot](https://www.anchorterminal.com/compare/leon-vs-nanobot.md) - [Leon vs NanoClaw](https://www.anchorterminal.com/compare/leon-vs-nanoclaw.md) - [Leon vs Dots](https://www.anchorterminal.com/compare/leon-vs-openai-dots.md) - [Leon vs OpenClaw](https://www.anchorterminal.com/compare/leon-vs-openclaw.md) - [Leon vs PicoClaw](https://www.anchorterminal.com/compare/leon-vs-picoclaw.md) - [Leon vs Poke](https://www.anchorterminal.com/compare/leon-vs-poke.md) - [Leon vs QwenPaw](https://www.anchorterminal.com/compare/leon-vs-qwenpaw.md) - [Leon vs Tasker AI](https://www.anchorterminal.com/compare/leon-vs-tasker-ai.md) - [Leon vs Town](https://www.anchorterminal.com/compare/leon-vs-town.md) - [Leon vs ZeroClaw](https://www.anchorterminal.com/compare/leon-vs-zeroclaw.md) - [Leon vs Zo Computer](https://www.anchorterminal.com/compare/leon-vs-zo-computer.md) - [asaply vs Claude Duet](https://www.anchorterminal.com/compare/asaply-vs-claude-duet.md) - [asaply vs Leon](https://www.anchorterminal.com/compare/asaply-vs-leon.md) - [Brea vs Claude Duet](https://www.anchorterminal.com/compare/brea-vs-claude-duet.md) - [Brea vs Leon](https://www.anchorterminal.com/compare/brea-vs-leon.md) - [Claude Duet vs Del](https://www.anchorterminal.com/compare/claude-duet-vs-del.md) - [Claude Duet vs HireAlpha](https://www.anchorterminal.com/compare/claude-duet-vs-hirealpha.md) - [Claude Duet vs Natura tinyNature](https://www.anchorterminal.com/compare/claude-duet-vs-natura.md) - [Claude Duet vs OpenInstinct](https://www.anchorterminal.com/compare/claude-duet-vs-openinstinct.md) - [Claude Duet vs Orbits](https://www.anchorterminal.com/compare/claude-duet-vs-orbits.md) - [Claude Duet vs Orchid](https://www.anchorterminal.com/compare/claude-duet-vs-orchid-ai.md) - [Claude Duet vs Pally](https://www.anchorterminal.com/compare/claude-duet-vs-pally.md) - [Claude Duet vs szn](https://www.anchorterminal.com/compare/claude-duet-vs-szn.md) - [Claude Duet vs Tomo](https://www.anchorterminal.com/compare/claude-duet-vs-tomo.md) - [Claude Duet vs Wajo (Fo)](https://www.anchorterminal.com/compare/claude-duet-vs-wajo.md) - [Claude Duet vs Zapia](https://www.anchorterminal.com/compare/claude-duet-vs-zapia.md) - [Del vs Leon](https://www.anchorterminal.com/compare/del-vs-leon.md) - [HireAlpha vs Leon](https://www.anchorterminal.com/compare/hirealpha-vs-leon.md) - [Leon vs Natura tinyNature](https://www.anchorterminal.com/compare/leon-vs-natura.md) - [Leon vs Orbits](https://www.anchorterminal.com/compare/leon-vs-orbits.md) - [Leon vs Orchid](https://www.anchorterminal.com/compare/leon-vs-orchid-ai.md) - [Leon vs Pally](https://www.anchorterminal.com/compare/leon-vs-pally.md) - [Leon vs szn](https://www.anchorterminal.com/compare/leon-vs-szn.md) - [Leon vs Tomo](https://www.anchorterminal.com/compare/leon-vs-tomo.md) - [Leon vs Wajo (Fo)](https://www.anchorterminal.com/compare/leon-vs-wajo.md) - [Leon vs Zapia](https://www.anchorterminal.com/compare/leon-vs-zapia.md) - [Asmi vs Claude Duet](https://www.anchorterminal.com/compare/asmi-vs-claude-duet.md) - [Asmi vs Leon](https://www.anchorterminal.com/compare/asmi-vs-leon.md) - [Atticus vs Claude Duet](https://www.anchorterminal.com/compare/atticus-vs-claude-duet.md) - [Atticus vs Leon](https://www.anchorterminal.com/compare/atticus-vs-leon.md) - [Boba vs Claude Duet](https://www.anchorterminal.com/compare/boba-vs-claude-duet.md) - [Boba vs Leon](https://www.anchorterminal.com/compare/boba-vs-leon.md) - [Claude Duet vs Hark Pro](https://www.anchorterminal.com/compare/claude-duet-vs-hark-pro.md) - [Claude Duet vs Tab](https://www.anchorterminal.com/compare/claude-duet-vs-tab-bot.md) - [Claude Duet vs Talorys](https://www.anchorterminal.com/compare/claude-duet-vs-talorys.md) - [Hark Pro vs Leon](https://www.anchorterminal.com/compare/hark-pro-vs-leon.md) - [Leon vs Tab](https://www.anchorterminal.com/compare/leon-vs-tab-bot.md) - [Leon vs Talorys](https://www.anchorterminal.com/compare/leon-vs-talorys.md) - [Leon vs OpenInstinct](https://www.anchorterminal.com/compare/leon-vs-openinstinct.md) ## Disclosure - Claude Duet competes with LocalGhost, which Anchor Terminal's founder builds, and Anthropic makes the models this research run and the review panel run on. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default. All three run on Claude, and every review of it carries a conflict label. --- Query this catalogue directly over MCP: https://www.anchorterminal.com/mcp (Streamable HTTP, no key). How: https://www.anchorterminal.com/agents/#mcp